One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,8,6,10,5,9)(3,11,12,15,13,16,14,7)(17,18,22,27,23,26,21,36)(19,28,30,39,31,24,37,40)(20,32,34,41,35,47,33,25)(29,43,44,42,45,46,48,38)(1,3,5,12,6,13,4,14)(2,7,9,11,10,15,8,16)(17,19)(18,24)(20,29)(21,30)(22,37)(23,31)(25,38)(26,28)(27,39)(32,46)(33,44)(34,48)(35,45)(36,40)(41,42)(43,47)(17,20,21,33,23,35,22,34)(18,25,27,32,26,41,36,47)(19,29,30,44,31,45,37,48)(24,38,39,46,28,42,40,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.